Prime-Line GD 12195 Garage Door Heavy Duty Extension Spring 25'' in L, 150 Lb. NOTE: THE PACKING PLASTIC MIGHT BE SCRATCHED DUE TO THE SHIPPING GD 12195 Garage Door Extension Spring 150 lb Prime-Line 25 in Galvanized Steel The Prime-Line GD 12195 Heavy-Duty Extension Spring is engineered for reliable, long-term operation of standard residential sectional garage doors up to 7 ft high. Made from galvanized carbon steel with reinforced double-loop ends, it resists corrosion and fatigue over 10,000 cycles of use. Each spring is rated for 150 lb of lifting force?used in pairs to balance doors up to 300 lb total weight. The included 1/8 in galvanized aircraft safety cable runs through the spring?s interior, containing energy in the event of breakage and significantly reducing injury or damage risk during operation. Features - Galvanized carbon steel construction ensures rust resistance and tensile strength - Double-loop ends enhance connection security and reduce wear at anchor points - Pre-installed 1/8 in aircraft-grade safety cable adds critical containment protection - Rated for 10,000 operational cycles?exceeding typical residential usage demands - 25 in overall length suits most 4-panel, 7 ft high sectional wood or steel doors - Compatible with standard lift brackets and J-hooks on residential openers - Silver finish provides visual identification and surface durability - Used in pairs to balance doors weighing up to 300 lb (150 lb per spring) - Meets industry safety recommendations for spring containment - Designed for easy retrofit on existing Prime-Line or OEM spring systems Specifications - Brand Name: Prime-Line - Model Name: Prime-Line GD 12195 - Part Number: GD12195 - Product Type: Garage Door Extension Spring with Safety Cable - Material: Galvanized Carbon Steel - Finish: Galvanized (Silver) - Wire Diameter: 1/8 in - Outside Diameter: 1-19/64 in - Overall Length: 25 in - Rest Length: 25 in - End Type: Double Loop - Load Rating: 150 lb per spring - Cycle Life: 10,000 - Safety Feature: Integrated 1/8 in Galvanized Aircraft Cable - Door Height Compatibility: Up to 7 ft - Panel Count Compatibility: 4-section doors - Item Weight: 4.70 lb - Country of Origin: China - UPC: 049793121950 - Global Trade Identification Number: 00049793121950 - Manufacturer: Prime-Line Products Product Application This extension spring is routinely installed by garage door technicians and DIYers maintaining or upgrading residential overhead systems?especially on older or heavier wood-panel doors where spring fatigue is common. It?s specified for standard 9 ft or 16 ft wide, 7 ft high sectional doors in single- or multi-car garages across North America. The integrated safety cable addresses a critical failure mode: uncontrolled spring recoil. In cold climates or high-use households, its 10,000-cycle rating ensures years of dependable operation without premature sag or loss of tension. Paired with its counterpart, it restores smooth, balanced door movement?reducing strain on openers and extending the life of rollers, tracks, and hinges.